1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali5045456 [20]
4 years ago
14

An 8.0newton block is accelerating down a frictionless ramo inclined at 15 degrees to the horizontal. What is the magnitude of t

he net force causing the blocks acceleration?
1. 0N
2. 2.1N
3. 7.7N
4. 8.0N
Physics
1 answer:
vichka [17]4 years ago
3 0

Given that:

     Force (F) = 8 N,

     inclination of ramp (θ) =15°

determine magnitude of net force (Fnet) = ?

                   Fx =8 cosθ

                        = 8 × cos 15

                        = 7.72 N ,

                    Fy = F sinθ

                         = 8 × sin 15

                         = 2.07 N ,

                Net force (Fnet) = sq.root [ (Fx)² + (Fy)²]

                                           = sq.root [(7.72)² + (2.07)²]

                                            = 8 N .

<em>Magnitude of net force is 8 N</em>

You might be interested in
A new cat 6 cable run and key stone jack were installed for a workstation that was moved from the sales department to the shippi
Andrei [34K]

Answer:

The cable run exceeds the specifications for Ethernet over twisted pair

Explanation:

The ethernet  network's router also serves as a bridge to the Internet. The router connects to the modem, which carries the Internet signal, sending and receiving data packet requests and routing them to the proper computers on the network.

Ethernet is a way of connecting computers together in a local area network or LAN. It has been the most widely used method of linking computers together in LAN s since the 1990 s.

The basic idea of its design is that multiple computers have access to it and can send data at any time.

8 0
3 years ago
When an alkali metal is involved in a chemical reaction with a nonmetal, what charge will its atoms most likely form? 1- 2- 2+ 1
seraphim [82]

Answer:

+1 ion

Explanation:

Alkali metals are metals that are found in Group I of the periodic table. Their electronic configuration is such that their valence shell in grounds state is always holding only one electron which they always lose when reacting with non-metals. A loss in an electron makes the atom electrically imbalanced and hence becoming a +1 ion.

7 0
3 years ago
A motor requires 400 joules of energy to lift a 5.0 kg mass 2.0 meters. Calculate the efficiency of this motor.
Sauron [17]

Answer:

25%

Explanation:

use F=mg

then use the answer you get from that and plug it into W=Fxh

take that answer and divide it by 400 J and multiply by 100

round to sig figs

4 0
3 years ago
Is it true that if an object is moving it has kinetic energy
densk [106]
Yes an object in motion has kinetic energy
5 0
3 years ago
Read 2 more answers
When an object stops moving, changes speed, or changes direction, how does a scientists describe that condition?
soldi70 [24.7K]
The answer is A. unbalanced forces
5 0
4 years ago
Other questions:
  • Rearrange the Coulomb's Law formula to find distance(r)
    12·2 answers
  • body is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150N. Wh
    8·1 answer
  • If a rock is thrown upward on the planet mars with a velocity of 14 m/s, its height (in meters) after t seconds is given by h =
    8·1 answer
  • What are groups 1,2 and 3 examples of on the periodic table
    15·1 answer
  • In midair an M = 145 kg bomb explodes into two pieces of m1 = 115 kg and another, respectively. Before the explosion, the bomb w
    6·1 answer
  • You (85 kg) are standing on the horizontal surface at the top of a cliff. The coefficient of static friction between your feet a
    6·1 answer
  • you arrive in my class 45 seconds after leaving math which is 90 meters away how fast did you travel?
    7·2 answers
  • what are the 3 properties of components of the universe that can be determined using electromagnetic radiation?
    13·1 answer
  • A liquid takes up space because it: _______. (2 points)
    12·1 answer
  • The average velocity of a tennis ball is measured during serving and found to be 216 km/hr.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!